| 198601855, 11.18.2021, NOC ltr, Sioux City Engineering Company, Sioux City, emailed.doc.pdf | 11/18/2021 | Notice of closure letter, proposed closure 12/15/2021 |
| 198600855, 11.17.2021, NOC form, Sioux City Engineering Company, Sioux City.pdf | 11/17/2021 | Notice of closure form proposed closure 12/15/2021 |
| 198601855 8200 gal tank .clean tank certificate dated 12.22.21.pdf | 12/22/2021 | 198601855 8200 gal tank .clean tank certificate dated 12.22.21 |